In case you need more info, it is called a AquaSpaceLight circa early 2000s. Anybody who has been to my house has seen these still running and kicking azz. I had to replace a starter in one ($20) and a socket in another ($15) - otherwise, three running since early 2000s with no issues. They are easy to diagnose/fix with a standard volt meter.
I don't use the PCs - worthless since I don't care for dusk/dawn.
You can still get a hanging kit for it from AquaMedic.